90393830

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 179712000

約数和(自身を除く): 89318170

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 103, 149, 155, 190, 206, 298, 310, 515, 589, 745, 1030, 1178, 1490, 1957, 2831, 2945, 3193, 3914, 4619, 5662, 5890, 6386, 9238, 9785, 14155, 15347, 15965, 19570, 23095, 28310, 30694, 31930, 46190, 60667, 76735, 87761, 121334, 153470, 175522, 291593, 303335, 438805, 475757, 583186, 606670, 877610, 951514, 1457965, 2378785, 2915930, 4757570, 9039383, 18078766, 45196915, 90393830]

約数ペア:

[(1, 90393830), (2, 45196915), (5, 18078766), (10, 9039383), (19, 4757570), (31, 2915930), (38, 2378785), (62, 1457965), (95, 951514), (103, 877610), (149, 606670), (155, 583186), (190, 475757), (206, 438805), (298, 303335), (310, 291593), (515, 175522), (589, 153470), (745, 121334), (1030, 87761), (1178, 76735), (1490, 60667), (1957, 46190), (2831, 31930), (2945, 30694), (3193, 28310), (3914, 23095), (4619, 19570), (5662, 15965), (5890, 15347), (6386, 14155), (9238, 9785)]