81787740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:419

約数の個数: 96

約数和(自身を含む): 236307456

約数和(自身を除く): 154519716

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 73, 142, 146, 213, 219, 263, 284, 292, 355, 365, 426, 438, 526, 710, 730, 789, 852, 876, 1052, 1065, 1095, 1315, 1420, 1460, 1578, 2130, 2190, 2630, 3156, 3945, 4260, 4380, 5183, 5260, 7890, 10366, 15549, 15780, 18673, 19199, 20732, 25915, 31098, 37346, 38398, 51830, 56019, 57597, 62196, 74692, 76796, 77745, 93365, 95995, 103660, 112038, 115194, 155490, 186730, 191990, 224076, 230388, 280095, 287985, 310980, 373460, 383980, 560190, 575970, 1120380, 1151940, 1363129, 2726258, 4089387, 5452516, 6815645, 8178774, 13631290, 16357548, 20446935, 27262580, 40893870, 81787740]

約数ペア:

[(1, 81787740), (2, 40893870), (3, 27262580), (4, 20446935), (5, 16357548), (6, 13631290), (10, 8178774), (12, 6815645), (15, 5452516), (20, 4089387), (30, 2726258), (60, 1363129), (71, 1151940), (73, 1120380), (142, 575970), (146, 560190), (213, 383980), (219, 373460), (263, 310980), (284, 287985), (292, 280095), (355, 230388), (365, 224076), (426, 191990), (438, 186730), (526, 155490), (710, 115194), (730, 112038), (789, 103660), (852, 95995), (876, 93365), (1052, 77745), (1065, 76796), (1095, 74692), (1315, 62196), (1420, 57597), (1460, 56019), (1578, 51830), (2130, 38398), (2190, 37346), (2630, 31098), (3156, 25915), (3945, 20732), (4260, 19199), (4380, 18673), (5183, 15780), (5260, 15549), (7890, 10366)]