31262500

素因数分解:

$2^2\times 5^5\times {\mathrm{41}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 71198568

約数和(自身を除く): 39936068

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 61, 82, 100, 122, 125, 164, 205, 244, 250, 305, 410, 500, 610, 625, 820, 1025, 1220, 1250, 1525, 2050, 2500, 2501, 3050, 3125, 4100, 5002, 5125, 6100, 6250, 7625, 10004, 10250, 12500, 12505, 15250, 20500, 25010, 25625, 30500, 38125, 50020, 51250, 62525, 76250, 102500, 125050, 128125, 152500, 190625, 250100, 256250, 312625, 381250, 512500, 625250, 762500, 1250500, 1563125, 3126250, 6252500, 7815625, 15631250, 31262500]

約数ペア:

[(1, 31262500), (2, 15631250), (4, 7815625), (5, 6252500), (10, 3126250), (20, 1563125), (25, 1250500), (41, 762500), (50, 625250), (61, 512500), (82, 381250), (100, 312625), (122, 256250), (125, 250100), (164, 190625), (205, 152500), (244, 128125), (250, 125050), (305, 102500), (410, 76250), (500, 62525), (610, 51250), (625, 50020), (820, 38125), (1025, 30500), (1220, 25625), (1250, 25010), (1525, 20500), (2050, 15250), (2500, 12505), (2501, 12500), (3050, 10250), (3125, 10004), (4100, 7625), (5002, 6250), (5125, 6100)]