30919980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{809}}^1$

素因数の和:848

約数の個数: 144

約数和(自身を含む): 108591840

約数和(自身を除く): 77671860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 49, 52, 60, 65, 70, 78, 84, 91, 98, 105, 130, 140, 147, 156, 182, 195, 196, 210, 245, 260, 273, 294, 364, 390, 420, 455, 490, 546, 588, 637, 735, 780, 809, 910, 980, 1092, 1274, 1365, 1470, 1618, 1820, 1911, 2427, 2548, 2730, 2940, 3185, 3236, 3822, 4045, 4854, 5460, 5663, 6370, 7644, 8090, 9555, 9708, 10517, 11326, 12135, 12740, 16180, 16989, 19110, 21034, 22652, 24270, 28315, 31551, 33978, 38220, 39641, 42068, 48540, 52585, 56630, 63102, 67956, 73619, 79282, 84945, 105170, 113260, 118923, 126204, 147238, 157755, 158564, 169890, 198205, 210340, 220857, 237846, 294476, 315510, 339780, 368095, 396410, 441714, 475692, 515333, 594615, 631020, 736190, 792820, 883428, 1030666, 1104285, 1189230, 1472380, 1545999, 2061332, 2208570, 2378460, 2576665, 3091998, 4417140, 5153330, 6183996, 7729995, 10306660, 15459990, 30919980]

約数ペア:

[(1, 30919980), (2, 15459990), (3, 10306660), (4, 7729995), (5, 6183996), (6, 5153330), (7, 4417140), (10, 3091998), (12, 2576665), (13, 2378460), (14, 2208570), (15, 2061332), (20, 1545999), (21, 1472380), (26, 1189230), (28, 1104285), (30, 1030666), (35, 883428), (39, 792820), (42, 736190), (49, 631020), (52, 594615), (60, 515333), (65, 475692), (70, 441714), (78, 396410), (84, 368095), (91, 339780), (98, 315510), (105, 294476), (130, 237846), (140, 220857), (147, 210340), (156, 198205), (182, 169890), (195, 158564), (196, 157755), (210, 147238), (245, 126204), (260, 118923), (273, 113260), (294, 105170), (364, 84945), (390, 79282), (420, 73619), (455, 67956), (490, 63102), (546, 56630), (588, 52585), (637, 48540), (735, 42068), (780, 39641), (809, 38220), (910, 33978), (980, 31551), (1092, 28315), (1274, 24270), (1365, 22652), (1470, 21034), (1618, 19110), (1820, 16989), (1911, 16180), (2427, 12740), (2548, 12135), (2730, 11326), (2940, 10517), (3185, 9708), (3236, 9555), (3822, 8090), (4045, 7644), (4854, 6370), (5460, 5663)]