81976400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{601}}^1$

素因数の和:661

約数の個数: 120

約数和(自身を含む): 222152448

約数和(自身を除く): 140176048

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 31, 40, 44, 50, 55, 62, 80, 88, 100, 110, 124, 155, 176, 200, 220, 248, 275, 310, 341, 400, 440, 496, 550, 601, 620, 682, 775, 880, 1100, 1202, 1240, 1364, 1550, 1705, 2200, 2404, 2480, 2728, 3005, 3100, 3410, 4400, 4808, 5456, 6010, 6200, 6611, 6820, 8525, 9616, 12020, 12400, 13222, 13640, 15025, 17050, 18631, 24040, 26444, 27280, 30050, 33055, 34100, 37262, 48080, 52888, 60100, 66110, 68200, 74524, 93155, 105776, 120200, 132220, 136400, 149048, 165275, 186310, 204941, 240400, 264440, 298096, 330550, 372620, 409882, 465775, 528880, 661100, 745240, 819764, 931550, 1024705, 1322200, 1490480, 1639528, 1863100, 2049410, 2644400, 3279056, 3726200, 4098820, 5123525, 7452400, 8197640, 10247050, 16395280, 20494100, 40988200, 81976400]

約数ペア:

[(1, 81976400), (2, 40988200), (4, 20494100), (5, 16395280), (8, 10247050), (10, 8197640), (11, 7452400), (16, 5123525), (20, 4098820), (22, 3726200), (25, 3279056), (31, 2644400), (40, 2049410), (44, 1863100), (50, 1639528), (55, 1490480), (62, 1322200), (80, 1024705), (88, 931550), (100, 819764), (110, 745240), (124, 661100), (155, 528880), (176, 465775), (200, 409882), (220, 372620), (248, 330550), (275, 298096), (310, 264440), (341, 240400), (400, 204941), (440, 186310), (496, 165275), (550, 149048), (601, 136400), (620, 132220), (682, 120200), (775, 105776), (880, 93155), (1100, 74524), (1202, 68200), (1240, 66110), (1364, 60100), (1550, 52888), (1705, 48080), (2200, 37262), (2404, 34100), (2480, 33055), (2728, 30050), (3005, 27280), (3100, 26444), (3410, 24040), (4400, 18631), (4808, 17050), (5456, 15025), (6010, 13640), (6200, 13222), (6611, 12400), (6820, 12020), (8525, 9616)]