28488720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:449

約数の個数: 160

約数和(自身を含む): 99493632

約数和(自身を除く): 71004912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 23, 24, 26, 30, 39, 40, 46, 48, 52, 60, 65, 69, 78, 80, 92, 104, 115, 120, 130, 138, 156, 184, 195, 208, 230, 240, 260, 276, 299, 312, 345, 368, 390, 397, 460, 520, 552, 598, 624, 690, 780, 794, 897, 920, 1040, 1104, 1191, 1196, 1380, 1495, 1560, 1588, 1794, 1840, 1985, 2382, 2392, 2760, 2990, 3120, 3176, 3588, 3970, 4485, 4764, 4784, 5161, 5520, 5955, 5980, 6352, 7176, 7940, 8970, 9131, 9528, 10322, 11910, 11960, 14352, 15483, 15880, 17940, 18262, 19056, 20644, 23820, 23920, 25805, 27393, 30966, 31760, 35880, 36524, 41288, 45655, 47640, 51610, 54786, 61932, 71760, 73048, 77415, 82576, 91310, 95280, 103220, 109572, 118703, 123864, 136965, 146096, 154830, 182620, 206440, 219144, 237406, 247728, 273930, 309660, 356109, 365240, 412880, 438288, 474812, 547860, 593515, 619320, 712218, 730480, 949624, 1095720, 1187030, 1238640, 1424436, 1780545, 1899248, 2191440, 2374060, 2848872, 3561090, 4748120, 5697744, 7122180, 9496240, 14244360, 28488720]

約数ペア:

[(1, 28488720), (2, 14244360), (3, 9496240), (4, 7122180), (5, 5697744), (6, 4748120), (8, 3561090), (10, 2848872), (12, 2374060), (13, 2191440), (15, 1899248), (16, 1780545), (20, 1424436), (23, 1238640), (24, 1187030), (26, 1095720), (30, 949624), (39, 730480), (40, 712218), (46, 619320), (48, 593515), (52, 547860), (60, 474812), (65, 438288), (69, 412880), (78, 365240), (80, 356109), (92, 309660), (104, 273930), (115, 247728), (120, 237406), (130, 219144), (138, 206440), (156, 182620), (184, 154830), (195, 146096), (208, 136965), (230, 123864), (240, 118703), (260, 109572), (276, 103220), (299, 95280), (312, 91310), (345, 82576), (368, 77415), (390, 73048), (397, 71760), (460, 61932), (520, 54786), (552, 51610), (598, 47640), (624, 45655), (690, 41288), (780, 36524), (794, 35880), (897, 31760), (920, 30966), (1040, 27393), (1104, 25805), (1191, 23920), (1196, 23820), (1380, 20644), (1495, 19056), (1560, 18262), (1588, 17940), (1794, 15880), (1840, 15483), (1985, 14352), (2382, 11960), (2392, 11910), (2760, 10322), (2990, 9528), (3120, 9131), (3176, 8970), (3588, 7940), (3970, 7176), (4485, 6352), (4764, 5980), (4784, 5955), (5161, 5520)]