261305200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1621}}^1$

素因数の和:1683

約数の個数: 120

約数和(自身を含む): 698316416

約数和(自身を除く): 437011216

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 40, 50, 52, 62, 65, 80, 100, 104, 124, 130, 155, 200, 208, 248, 260, 310, 325, 400, 403, 496, 520, 620, 650, 775, 806, 1040, 1240, 1300, 1550, 1612, 1621, 2015, 2480, 2600, 3100, 3224, 3242, 4030, 5200, 6200, 6448, 6484, 8060, 8105, 10075, 12400, 12968, 16120, 16210, 20150, 21073, 25936, 32240, 32420, 40300, 40525, 42146, 50251, 64840, 80600, 81050, 84292, 100502, 105365, 129680, 161200, 162100, 168584, 201004, 210730, 251255, 324200, 337168, 402008, 421460, 502510, 526825, 648400, 653263, 804016, 842920, 1005020, 1053650, 1256275, 1306526, 1685840, 2010040, 2107300, 2512550, 2613052, 3266315, 4020080, 4214600, 5025100, 5226104, 6532630, 8429200, 10050200, 10452208, 13065260, 16331575, 20100400, 26130520, 32663150, 52261040, 65326300, 130652600, 261305200]

約数ペア:

[(1, 261305200), (2, 130652600), (4, 65326300), (5, 52261040), (8, 32663150), (10, 26130520), (13, 20100400), (16, 16331575), (20, 13065260), (25, 10452208), (26, 10050200), (31, 8429200), (40, 6532630), (50, 5226104), (52, 5025100), (62, 4214600), (65, 4020080), (80, 3266315), (100, 2613052), (104, 2512550), (124, 2107300), (130, 2010040), (155, 1685840), (200, 1306526), (208, 1256275), (248, 1053650), (260, 1005020), (310, 842920), (325, 804016), (400, 653263), (403, 648400), (496, 526825), (520, 502510), (620, 421460), (650, 402008), (775, 337168), (806, 324200), (1040, 251255), (1240, 210730), (1300, 201004), (1550, 168584), (1612, 162100), (1621, 161200), (2015, 129680), (2480, 105365), (2600, 100502), (3100, 84292), (3224, 81050), (3242, 80600), (4030, 64840), (5200, 50251), (6200, 42146), (6448, 40525), (6484, 40300), (8060, 32420), (8105, 32240), (10075, 25936), (12400, 21073), (12968, 20150), (16120, 16210)]