28049320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1$

素因数の和:227

約数の個数: 128

約数和(自身を含む): 76204800

約数和(自身を除く): 48155480

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 19, 20, 26, 34, 38, 40, 52, 65, 68, 76, 85, 95, 104, 130, 136, 152, 167, 170, 190, 221, 247, 260, 323, 334, 340, 380, 442, 494, 520, 646, 668, 680, 760, 835, 884, 988, 1105, 1235, 1292, 1336, 1615, 1670, 1768, 1976, 2171, 2210, 2470, 2584, 2839, 3173, 3230, 3340, 4199, 4342, 4420, 4940, 5678, 6346, 6460, 6680, 8398, 8684, 8840, 9880, 10855, 11356, 12692, 12920, 14195, 15865, 16796, 17368, 20995, 21710, 22712, 25384, 28390, 31730, 33592, 36907, 41249, 41990, 43420, 53941, 56780, 63460, 73814, 82498, 83980, 86840, 107882, 113560, 126920, 147628, 164996, 167960, 184535, 206245, 215764, 269705, 295256, 329992, 369070, 412490, 431528, 539410, 701233, 738140, 824980, 1078820, 1402466, 1476280, 1649960, 2157640, 2804932, 3506165, 5609864, 7012330, 14024660, 28049320]

約数ペア:

[(1, 28049320), (2, 14024660), (4, 7012330), (5, 5609864), (8, 3506165), (10, 2804932), (13, 2157640), (17, 1649960), (19, 1476280), (20, 1402466), (26, 1078820), (34, 824980), (38, 738140), (40, 701233), (52, 539410), (65, 431528), (68, 412490), (76, 369070), (85, 329992), (95, 295256), (104, 269705), (130, 215764), (136, 206245), (152, 184535), (167, 167960), (170, 164996), (190, 147628), (221, 126920), (247, 113560), (260, 107882), (323, 86840), (334, 83980), (340, 82498), (380, 73814), (442, 63460), (494, 56780), (520, 53941), (646, 43420), (668, 41990), (680, 41249), (760, 36907), (835, 33592), (884, 31730), (988, 28390), (1105, 25384), (1235, 22712), (1292, 21710), (1336, 20995), (1615, 17368), (1670, 16796), (1768, 15865), (1976, 14195), (2171, 12920), (2210, 12692), (2470, 11356), (2584, 10855), (2839, 9880), (3173, 8840), (3230, 8684), (3340, 8398), (4199, 6680), (4342, 6460), (4420, 6346), (4940, 5678)]