391679420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:312

約数の個数: 144

約数和(自身を含む): 978130944

約数和(自身を除く): 586451524

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 31, 44, 46, 55, 62, 92, 110, 115, 121, 124, 155, 220, 227, 230, 242, 253, 310, 341, 454, 460, 484, 506, 605, 620, 682, 713, 908, 1012, 1135, 1210, 1265, 1364, 1426, 1705, 2270, 2420, 2497, 2530, 2783, 2852, 3410, 3565, 3751, 4540, 4994, 5060, 5221, 5566, 6820, 7037, 7130, 7502, 7843, 9988, 10442, 11132, 12485, 13915, 14074, 14260, 15004, 15686, 18755, 20884, 24970, 26105, 27467, 27830, 28148, 31372, 35185, 37510, 39215, 49940, 52210, 54934, 55660, 57431, 70370, 75020, 77407, 78430, 86273, 104420, 109868, 114862, 137335, 140740, 154814, 156860, 161851, 172546, 229724, 274670, 287155, 309628, 323702, 345092, 387035, 431365, 549340, 574310, 631741, 647404, 774070, 809255, 851477, 862730, 1148620, 1263482, 1548140, 1618510, 1702954, 1725460, 1780361, 2526964, 3158705, 3237020, 3405908, 3560722, 4257385, 6317410, 7121444, 8514770, 8901805, 12634820, 17029540, 17803610, 19583971, 35607220, 39167942, 78335884, 97919855, 195839710, 391679420]

約数ペア:

[(1, 391679420), (2, 195839710), (4, 97919855), (5, 78335884), (10, 39167942), (11, 35607220), (20, 19583971), (22, 17803610), (23, 17029540), (31, 12634820), (44, 8901805), (46, 8514770), (55, 7121444), (62, 6317410), (92, 4257385), (110, 3560722), (115, 3405908), (121, 3237020), (124, 3158705), (155, 2526964), (220, 1780361), (227, 1725460), (230, 1702954), (242, 1618510), (253, 1548140), (310, 1263482), (341, 1148620), (454, 862730), (460, 851477), (484, 809255), (506, 774070), (605, 647404), (620, 631741), (682, 574310), (713, 549340), (908, 431365), (1012, 387035), (1135, 345092), (1210, 323702), (1265, 309628), (1364, 287155), (1426, 274670), (1705, 229724), (2270, 172546), (2420, 161851), (2497, 156860), (2530, 154814), (2783, 140740), (2852, 137335), (3410, 114862), (3565, 109868), (3751, 104420), (4540, 86273), (4994, 78430), (5060, 77407), (5221, 75020), (5566, 70370), (6820, 57431), (7037, 55660), (7130, 54934), (7502, 52210), (7843, 49940), (9988, 39215), (10442, 37510), (11132, 35185), (12485, 31372), (13915, 28148), (14074, 27830), (14260, 27467), (15004, 26105), (15686, 24970), (18755, 20884)]