2178458660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{71707}}^1$

素因数の和:71761

約数の個数: 72

約数和(自身を含む): 5493406464

約数和(自身を除く): 3314947804

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 3038, 4340, 6076, 7595, 15190, 30380, 71707, 143414, 286828, 358535, 501949, 717070, 1003898, 1434140, 2007796, 2222917, 2509745, 3513643, 4445834, 5019490, 7027286, 8891668, 10038980, 11114585, 14054572, 15560419, 17568215, 22229170, 31120838, 35136430, 44458340, 62241676, 70272860, 77802095, 108922933, 155604190, 217845866, 311208380, 435691732, 544614665, 1089229330, 2178458660]

約数ペア:

[(1, 2178458660), (2, 1089229330), (4, 544614665), (5, 435691732), (7, 311208380), (10, 217845866), (14, 155604190), (20, 108922933), (28, 77802095), (31, 70272860), (35, 62241676), (49, 44458340), (62, 35136430), (70, 31120838), (98, 22229170), (124, 17568215), (140, 15560419), (155, 14054572), (196, 11114585), (217, 10038980), (245, 8891668), (310, 7027286), (434, 5019490), (490, 4445834), (620, 3513643), (868, 2509745), (980, 2222917), (1085, 2007796), (1519, 1434140), (2170, 1003898), (3038, 717070), (4340, 501949), (6076, 358535), (7595, 286828), (15190, 143414), (30380, 71707)]