18913968

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:287

約数の個数: 120

約数和(自身を含む): 57774080

約数和(自身を除く): 38860112

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, 223, 228, 248, 279, 304, 342, 372, 446, 456, 496, 558, 589, 669, 684, 744, 892, 912, 1116, 1178, 1338, 1368, 1488, 1767, 1784, 2007, 2232, 2356, 2676, 2736, 3534, 3568, 4014, 4237, 4464, 4712, 5301, 5352, 6913, 7068, 8028, 8474, 9424, 10602, 10704, 12711, 13826, 14136, 16056, 16948, 20739, 21204, 25422, 27652, 28272, 32112, 33896, 38133, 41478, 42408, 50844, 55304, 62217, 67792, 76266, 82956, 84816, 101688, 110608, 124434, 131347, 152532, 165912, 203376, 248868, 262694, 305064, 331824, 394041, 497736, 525388, 610128, 788082, 995472, 1050776, 1182123, 1576164, 2101552, 2364246, 3152328, 4728492, 6304656, 9456984, 18913968]

約数ペア:

[(1, 18913968), (2, 9456984), (3, 6304656), (4, 4728492), (6, 3152328), (8, 2364246), (9, 2101552), (12, 1576164), (16, 1182123), (18, 1050776), (19, 995472), (24, 788082), (31, 610128), (36, 525388), (38, 497736), (48, 394041), (57, 331824), (62, 305064), (72, 262694), (76, 248868), (93, 203376), (114, 165912), (124, 152532), (144, 131347), (152, 124434), (171, 110608), (186, 101688), (223, 84816), (228, 82956), (248, 76266), (279, 67792), (304, 62217), (342, 55304), (372, 50844), (446, 42408), (456, 41478), (496, 38133), (558, 33896), (589, 32112), (669, 28272), (684, 27652), (744, 25422), (892, 21204), (912, 20739), (1116, 16948), (1178, 16056), (1338, 14136), (1368, 13826), (1488, 12711), (1767, 10704), (1784, 10602), (2007, 9424), (2232, 8474), (2356, 8028), (2676, 7068), (2736, 6913), (3534, 5352), (3568, 5301), (4014, 4712), (4237, 4464)]