644734980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{188519}}^1$

素因数の和:188553

約数の個数: 72

約数和(自身を含む): 2058638400

約数和(自身を除く): 1413903420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 188519, 377038, 565557, 754076, 942595, 1131114, 1696671, 1885190, 2262228, 2827785, 3393342, 3581861, 3770380, 5655570, 6786684, 7163722, 8483355, 10745583, 11311140, 14327444, 16966710, 17909305, 21491166, 32236749, 33933420, 35818610, 42982332, 53727915, 64473498, 71637220, 107455830, 128946996, 161183745, 214911660, 322367490, 644734980]

約数ペア:

[(1, 644734980), (2, 322367490), (3, 214911660), (4, 161183745), (5, 128946996), (6, 107455830), (9, 71637220), (10, 64473498), (12, 53727915), (15, 42982332), (18, 35818610), (19, 33933420), (20, 32236749), (30, 21491166), (36, 17909305), (38, 16966710), (45, 14327444), (57, 11311140), (60, 10745583), (76, 8483355), (90, 7163722), (95, 6786684), (114, 5655570), (171, 3770380), (180, 3581861), (190, 3393342), (228, 2827785), (285, 2262228), (342, 1885190), (380, 1696671), (570, 1131114), (684, 942595), (855, 754076), (1140, 565557), (1710, 377038), (3420, 188519)]