21366540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:448

約数の個数: 144

約数和(自身を含む): 73015488

約数和(自身を除く): 51648948

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 30, 36, 39, 45, 46, 52, 60, 65, 69, 78, 90, 92, 115, 117, 130, 138, 156, 180, 195, 207, 230, 234, 260, 276, 299, 345, 390, 397, 414, 460, 468, 585, 598, 690, 780, 794, 828, 897, 1035, 1170, 1191, 1196, 1380, 1495, 1588, 1794, 1985, 2070, 2340, 2382, 2691, 2990, 3573, 3588, 3970, 4140, 4485, 4764, 5161, 5382, 5955, 5980, 7146, 7940, 8970, 9131, 10322, 10764, 11910, 13455, 14292, 15483, 17865, 17940, 18262, 20644, 23820, 25805, 26910, 27393, 30966, 35730, 36524, 45655, 46449, 51610, 53820, 54786, 61932, 71460, 77415, 82179, 91310, 92898, 103220, 109572, 118703, 136965, 154830, 164358, 182620, 185796, 232245, 237406, 273930, 309660, 328716, 356109, 410895, 464490, 474812, 547860, 593515, 712218, 821790, 928980, 1068327, 1187030, 1424436, 1643580, 1780545, 2136654, 2374060, 3561090, 4273308, 5341635, 7122180, 10683270, 21366540]

約数ペア:

[(1, 21366540), (2, 10683270), (3, 7122180), (4, 5341635), (5, 4273308), (6, 3561090), (9, 2374060), (10, 2136654), (12, 1780545), (13, 1643580), (15, 1424436), (18, 1187030), (20, 1068327), (23, 928980), (26, 821790), (30, 712218), (36, 593515), (39, 547860), (45, 474812), (46, 464490), (52, 410895), (60, 356109), (65, 328716), (69, 309660), (78, 273930), (90, 237406), (92, 232245), (115, 185796), (117, 182620), (130, 164358), (138, 154830), (156, 136965), (180, 118703), (195, 109572), (207, 103220), (230, 92898), (234, 91310), (260, 82179), (276, 77415), (299, 71460), (345, 61932), (390, 54786), (397, 53820), (414, 51610), (460, 46449), (468, 45655), (585, 36524), (598, 35730), (690, 30966), (780, 27393), (794, 26910), (828, 25805), (897, 23820), (1035, 20644), (1170, 18262), (1191, 17940), (1196, 17865), (1380, 15483), (1495, 14292), (1588, 13455), (1794, 11910), (1985, 10764), (2070, 10322), (2340, 9131), (2382, 8970), (2691, 7940), (2990, 7146), (3573, 5980), (3588, 5955), (3970, 5382), (4140, 5161), (4485, 4764)]