20440656

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:305

約数の個数: 120

約数和(自身を含む): 62416640

約数和(自身を除く): 41975984

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 31, 36, 38, 48, 57, 62, 72, 76, 93, 114, 124, 144, 152, 171, 186, 228, 241, 248, 279, 304, 342, 372, 456, 482, 496, 558, 589, 684, 723, 744, 912, 964, 1116, 1178, 1368, 1446, 1488, 1767, 1928, 2169, 2232, 2356, 2736, 2892, 3534, 3856, 4338, 4464, 4579, 4712, 5301, 5784, 7068, 7471, 8676, 9158, 9424, 10602, 11568, 13737, 14136, 14942, 17352, 18316, 21204, 22413, 27474, 28272, 29884, 34704, 36632, 41211, 42408, 44826, 54948, 59768, 67239, 73264, 82422, 84816, 89652, 109896, 119536, 134478, 141949, 164844, 179304, 219792, 268956, 283898, 329688, 358608, 425847, 537912, 567796, 659376, 851694, 1075824, 1135592, 1277541, 1703388, 2271184, 2555082, 3406776, 5110164, 6813552, 10220328, 20440656]

約数ペア:

[(1, 20440656), (2, 10220328), (3, 6813552), (4, 5110164), (6, 3406776), (8, 2555082), (9, 2271184), (12, 1703388), (16, 1277541), (18, 1135592), (19, 1075824), (24, 851694), (31, 659376), (36, 567796), (38, 537912), (48, 425847), (57, 358608), (62, 329688), (72, 283898), (76, 268956), (93, 219792), (114, 179304), (124, 164844), (144, 141949), (152, 134478), (171, 119536), (186, 109896), (228, 89652), (241, 84816), (248, 82422), (279, 73264), (304, 67239), (342, 59768), (372, 54948), (456, 44826), (482, 42408), (496, 41211), (558, 36632), (589, 34704), (684, 29884), (723, 28272), (744, 27474), (912, 22413), (964, 21204), (1116, 18316), (1178, 17352), (1368, 14942), (1446, 14136), (1488, 13737), (1767, 11568), (1928, 10602), (2169, 9424), (2232, 9158), (2356, 8676), (2736, 7471), (2892, 7068), (3534, 5784), (3856, 5301), (4338, 4712), (4464, 4579)]