20783490

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{331}}^1$

素因数の和:384

約数の個数: 128

約数和(自身を含む): 64253952

約数和(自身を除く): 43470462

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 23, 26, 30, 35, 39, 42, 46, 65, 69, 70, 78, 91, 105, 115, 130, 138, 161, 182, 195, 210, 230, 273, 299, 322, 331, 345, 390, 455, 483, 546, 598, 662, 690, 805, 897, 910, 966, 993, 1365, 1495, 1610, 1655, 1794, 1986, 2093, 2317, 2415, 2730, 2990, 3310, 4186, 4303, 4485, 4634, 4830, 4965, 6279, 6951, 7613, 8606, 8970, 9930, 10465, 11585, 12558, 12909, 13902, 15226, 20930, 21515, 22839, 23170, 25818, 30121, 31395, 34755, 38065, 43030, 45678, 53291, 60242, 62790, 64545, 69510, 76130, 90363, 98969, 106582, 114195, 129090, 150605, 159873, 180726, 197938, 228390, 266455, 296907, 301210, 319746, 451815, 494845, 532910, 593814, 692783, 799365, 903630, 989690, 1385566, 1484535, 1598730, 2078349, 2969070, 3463915, 4156698, 6927830, 10391745, 20783490]

約数ペア:

[(1, 20783490), (2, 10391745), (3, 6927830), (5, 4156698), (6, 3463915), (7, 2969070), (10, 2078349), (13, 1598730), (14, 1484535), (15, 1385566), (21, 989690), (23, 903630), (26, 799365), (30, 692783), (35, 593814), (39, 532910), (42, 494845), (46, 451815), (65, 319746), (69, 301210), (70, 296907), (78, 266455), (91, 228390), (105, 197938), (115, 180726), (130, 159873), (138, 150605), (161, 129090), (182, 114195), (195, 106582), (210, 98969), (230, 90363), (273, 76130), (299, 69510), (322, 64545), (331, 62790), (345, 60242), (390, 53291), (455, 45678), (483, 43030), (546, 38065), (598, 34755), (662, 31395), (690, 30121), (805, 25818), (897, 23170), (910, 22839), (966, 21515), (993, 20930), (1365, 15226), (1495, 13902), (1610, 12909), (1655, 12558), (1794, 11585), (1986, 10465), (2093, 9930), (2317, 8970), (2415, 8606), (2730, 7613), (2990, 6951), (3310, 6279), (4186, 4965), (4303, 4830), (4485, 4634)]