79679920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:171

約数の個数: 120

約数和(自身を含む): 204094080

約数和(自身を除く): 124414160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 31, 38, 40, 62, 76, 80, 89, 95, 124, 152, 155, 178, 190, 248, 304, 310, 356, 361, 380, 445, 496, 589, 620, 712, 722, 760, 890, 1178, 1240, 1424, 1444, 1520, 1691, 1780, 1805, 2356, 2480, 2759, 2888, 2945, 3382, 3560, 3610, 4712, 5518, 5776, 5890, 6764, 7120, 7220, 8455, 9424, 11036, 11191, 11780, 13528, 13795, 14440, 16910, 22072, 22382, 23560, 27056, 27590, 28880, 32129, 33820, 44144, 44764, 47120, 52421, 55180, 55955, 64258, 67640, 89528, 104842, 110360, 111910, 128516, 135280, 160645, 179056, 209684, 220720, 223820, 257032, 262105, 321290, 419368, 447640, 514064, 524210, 642580, 838736, 895280, 995999, 1048420, 1285160, 1991998, 2096840, 2570320, 3983996, 4193680, 4979995, 7967992, 9959990, 15935984, 19919980, 39839960, 79679920]

約数ペア:

[(1, 79679920), (2, 39839960), (4, 19919980), (5, 15935984), (8, 9959990), (10, 7967992), (16, 4979995), (19, 4193680), (20, 3983996), (31, 2570320), (38, 2096840), (40, 1991998), (62, 1285160), (76, 1048420), (80, 995999), (89, 895280), (95, 838736), (124, 642580), (152, 524210), (155, 514064), (178, 447640), (190, 419368), (248, 321290), (304, 262105), (310, 257032), (356, 223820), (361, 220720), (380, 209684), (445, 179056), (496, 160645), (589, 135280), (620, 128516), (712, 111910), (722, 110360), (760, 104842), (890, 89528), (1178, 67640), (1240, 64258), (1424, 55955), (1444, 55180), (1520, 52421), (1691, 47120), (1780, 44764), (1805, 44144), (2356, 33820), (2480, 32129), (2759, 28880), (2888, 27590), (2945, 27056), (3382, 23560), (3560, 22382), (3610, 22072), (4712, 16910), (5518, 14440), (5776, 13795), (5890, 13528), (6764, 11780), (7120, 11191), (7220, 11036), (8455, 9424)]