1971608990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:402

約数の個数: 128

約数和(自身を含む): 4180377600

約数和(自身を除く): 2208768610

約数列:

[1, 2, 5, 10, 13, 23, 26, 31, 46, 62, 65, 89, 115, 130, 155, 178, 230, 239, 299, 310, 403, 445, 478, 598, 713, 806, 890, 1157, 1195, 1426, 1495, 2015, 2047, 2314, 2390, 2759, 2990, 3107, 3565, 4030, 4094, 5497, 5518, 5785, 6214, 7130, 7409, 9269, 10235, 10994, 11570, 13795, 14818, 15535, 18538, 20470, 21271, 26611, 27485, 27590, 31070, 35867, 37045, 42542, 46345, 53222, 54970, 63457, 71461, 71734, 74090, 92690, 96317, 106355, 126914, 133055, 142922, 170407, 179335, 192634, 212710, 266110, 276523, 317285, 340814, 357305, 358670, 481585, 489233, 553046, 634570, 659401, 714610, 824941, 852035, 963170, 978466, 1318802, 1382615, 1649882, 1704070, 2215291, 2446165, 2765230, 3297005, 4124705, 4430582, 4892330, 6360029, 6594010, 8249410, 8572213, 11076455, 12720058, 15166223, 17144426, 22152910, 30332446, 31800145, 42861065, 63600290, 75831115, 85722130, 151662230, 197160899, 394321798, 985804495, 1971608990]

約数ペア:

[(1, 1971608990), (2, 985804495), (5, 394321798), (10, 197160899), (13, 151662230), (23, 85722130), (26, 75831115), (31, 63600290), (46, 42861065), (62, 31800145), (65, 30332446), (89, 22152910), (115, 17144426), (130, 15166223), (155, 12720058), (178, 11076455), (230, 8572213), (239, 8249410), (299, 6594010), (310, 6360029), (403, 4892330), (445, 4430582), (478, 4124705), (598, 3297005), (713, 2765230), (806, 2446165), (890, 2215291), (1157, 1704070), (1195, 1649882), (1426, 1382615), (1495, 1318802), (2015, 978466), (2047, 963170), (2314, 852035), (2390, 824941), (2759, 714610), (2990, 659401), (3107, 634570), (3565, 553046), (4030, 489233), (4094, 481585), (5497, 358670), (5518, 357305), (5785, 340814), (6214, 317285), (7130, 276523), (7409, 266110), (9269, 212710), (10235, 192634), (10994, 179335), (11570, 170407), (13795, 142922), (14818, 133055), (15535, 126914), (18538, 106355), (20470, 96317), (21271, 92690), (26611, 74090), (27485, 71734), (27590, 71461), (31070, 63457), (35867, 54970), (37045, 53222), (42542, 46345)]