21290490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{587}}^1$

素因数の和:644

約数の個数: 96

約数和(自身を含む): 61641216

約数和(自身を除く): 40350726

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 31, 39, 45, 62, 65, 78, 90, 93, 117, 130, 155, 186, 195, 234, 279, 310, 390, 403, 465, 558, 585, 587, 806, 930, 1170, 1174, 1209, 1395, 1761, 2015, 2418, 2790, 2935, 3522, 3627, 4030, 5283, 5870, 6045, 7254, 7631, 8805, 10566, 12090, 15262, 17610, 18135, 18197, 22893, 26415, 36270, 36394, 38155, 45786, 52830, 54591, 68679, 76310, 90985, 109182, 114465, 137358, 163773, 181970, 228930, 236561, 272955, 327546, 343395, 473122, 545910, 686790, 709683, 818865, 1182805, 1419366, 1637730, 2129049, 2365610, 3548415, 4258098, 7096830, 10645245, 21290490]

約数ペア:

[(1, 21290490), (2, 10645245), (3, 7096830), (5, 4258098), (6, 3548415), (9, 2365610), (10, 2129049), (13, 1637730), (15, 1419366), (18, 1182805), (26, 818865), (30, 709683), (31, 686790), (39, 545910), (45, 473122), (62, 343395), (65, 327546), (78, 272955), (90, 236561), (93, 228930), (117, 181970), (130, 163773), (155, 137358), (186, 114465), (195, 109182), (234, 90985), (279, 76310), (310, 68679), (390, 54591), (403, 52830), (465, 45786), (558, 38155), (585, 36394), (587, 36270), (806, 26415), (930, 22893), (1170, 18197), (1174, 18135), (1209, 17610), (1395, 15262), (1761, 12090), (2015, 10566), (2418, 8805), (2790, 7631), (2935, 7254), (3522, 6045), (3627, 5870), (4030, 5283)]