20010430040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{491}}^1\times {\mathrm{821}}^1$

素因数の和:1413

約数の個数: 128

約数和(自身を含む): 48482349120

約数和(自身を除く): 28471919080

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 73, 85, 136, 146, 170, 292, 340, 365, 491, 584, 680, 730, 821, 982, 1241, 1460, 1642, 1964, 2455, 2482, 2920, 3284, 3928, 4105, 4910, 4964, 6205, 6568, 8210, 8347, 9820, 9928, 12410, 13957, 16420, 16694, 19640, 24820, 27914, 32840, 33388, 35843, 41735, 49640, 55828, 59933, 66776, 69785, 71686, 83470, 111656, 119866, 139570, 143372, 166940, 179215, 239732, 279140, 286744, 299665, 333880, 358430, 403111, 479464, 558280, 599330, 609331, 716860, 806222, 1018861, 1198660, 1218662, 1433720, 1612444, 2015555, 2037722, 2397320, 2437324, 3046655, 3224888, 4031110, 4075444, 4874648, 5094305, 6093310, 6852887, 8062220, 8150888, 10188610, 12186620, 13705774, 16124440, 20377220, 24373240, 27411548, 29427103, 34264435, 40754440, 54823096, 58854206, 68528870, 117708412, 137057740, 147135515, 235416824, 274115480, 294271030, 500260751, 588542060, 1000521502, 1177084120, 2001043004, 2501303755, 4002086008, 5002607510, 10005215020, 20010430040]

約数ペア:

[(1, 20010430040), (2, 10005215020), (4, 5002607510), (5, 4002086008), (8, 2501303755), (10, 2001043004), (17, 1177084120), (20, 1000521502), (34, 588542060), (40, 500260751), (68, 294271030), (73, 274115480), (85, 235416824), (136, 147135515), (146, 137057740), (170, 117708412), (292, 68528870), (340, 58854206), (365, 54823096), (491, 40754440), (584, 34264435), (680, 29427103), (730, 27411548), (821, 24373240), (982, 20377220), (1241, 16124440), (1460, 13705774), (1642, 12186620), (1964, 10188610), (2455, 8150888), (2482, 8062220), (2920, 6852887), (3284, 6093310), (3928, 5094305), (4105, 4874648), (4910, 4075444), (4964, 4031110), (6205, 3224888), (6568, 3046655), (8210, 2437324), (8347, 2397320), (9820, 2037722), (9928, 2015555), (12410, 1612444), (13957, 1433720), (16420, 1218662), (16694, 1198660), (19640, 1018861), (24820, 806222), (27914, 716860), (32840, 609331), (33388, 599330), (35843, 558280), (41735, 479464), (49640, 403111), (55828, 358430), (59933, 333880), (66776, 299665), (69785, 286744), (71686, 279140), (83470, 239732), (111656, 179215), (119866, 166940), (139570, 143372)]