28757820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1$

素因数の和:284

約数の個数: 192

約数和(自身を含む): 103864320

約数和(自身を除く): 75106500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 23, 26, 28, 30, 35, 39, 42, 46, 52, 60, 65, 69, 70, 78, 84, 91, 92, 105, 115, 130, 138, 140, 156, 161, 182, 195, 210, 229, 230, 260, 273, 276, 299, 322, 345, 364, 390, 420, 455, 458, 460, 483, 546, 598, 644, 687, 690, 780, 805, 897, 910, 916, 966, 1092, 1145, 1196, 1365, 1374, 1380, 1495, 1603, 1610, 1794, 1820, 1932, 2093, 2290, 2415, 2730, 2748, 2977, 2990, 3206, 3220, 3435, 3588, 4186, 4485, 4580, 4809, 4830, 5267, 5460, 5954, 5980, 6279, 6412, 6870, 8015, 8372, 8931, 8970, 9618, 9660, 10465, 10534, 11908, 12558, 13740, 14885, 15801, 16030, 17862, 17940, 19236, 20839, 20930, 21068, 24045, 25116, 26335, 29770, 31395, 31602, 32060, 35724, 36869, 41678, 41860, 44655, 48090, 52670, 59540, 62517, 62790, 63204, 68471, 73738, 79005, 83356, 89310, 96180, 104195, 105340, 110607, 125034, 125580, 136942, 147476, 158010, 178620, 184345, 205413, 208390, 221214, 250068, 273884, 312585, 316020, 342355, 368690, 410826, 416780, 442428, 479297, 553035, 625170, 684710, 737380, 821652, 958594, 1027065, 1106070, 1250340, 1369420, 1437891, 1917188, 2054130, 2212140, 2396485, 2875782, 4108260, 4792970, 5751564, 7189455, 9585940, 14378910, 28757820]

約数ペア:

[(1, 28757820), (2, 14378910), (3, 9585940), (4, 7189455), (5, 5751564), (6, 4792970), (7, 4108260), (10, 2875782), (12, 2396485), (13, 2212140), (14, 2054130), (15, 1917188), (20, 1437891), (21, 1369420), (23, 1250340), (26, 1106070), (28, 1027065), (30, 958594), (35, 821652), (39, 737380), (42, 684710), (46, 625170), (52, 553035), (60, 479297), (65, 442428), (69, 416780), (70, 410826), (78, 368690), (84, 342355), (91, 316020), (92, 312585), (105, 273884), (115, 250068), (130, 221214), (138, 208390), (140, 205413), (156, 184345), (161, 178620), (182, 158010), (195, 147476), (210, 136942), (229, 125580), (230, 125034), (260, 110607), (273, 105340), (276, 104195), (299, 96180), (322, 89310), (345, 83356), (364, 79005), (390, 73738), (420, 68471), (455, 63204), (458, 62790), (460, 62517), (483, 59540), (546, 52670), (598, 48090), (644, 44655), (687, 41860), (690, 41678), (780, 36869), (805, 35724), (897, 32060), (910, 31602), (916, 31395), (966, 29770), (1092, 26335), (1145, 25116), (1196, 24045), (1365, 21068), (1374, 20930), (1380, 20839), (1495, 19236), (1603, 17940), (1610, 17862), (1794, 16030), (1820, 15801), (1932, 14885), (2093, 13740), (2290, 12558), (2415, 11908), (2730, 10534), (2748, 10465), (2977, 9660), (2990, 9618), (3206, 8970), (3220, 8931), (3435, 8372), (3588, 8015), (4186, 6870), (4485, 6412), (4580, 6279), (4809, 5980), (4830, 5954), (5267, 5460)]