20120750

素因数分解:

$2^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:222

約数の個数: 64

約数和(自身を含む): 41827968

約数和(自身を除く): 21707218

約数列:

[1, 2, 5, 10, 13, 25, 26, 41, 50, 65, 82, 125, 130, 151, 205, 250, 302, 325, 410, 533, 650, 755, 1025, 1066, 1510, 1625, 1963, 2050, 2665, 3250, 3775, 3926, 5125, 5330, 6191, 7550, 9815, 10250, 12382, 13325, 18875, 19630, 26650, 30955, 37750, 49075, 61910, 66625, 80483, 98150, 133250, 154775, 160966, 245375, 309550, 402415, 490750, 773875, 804830, 1547750, 2012075, 4024150, 10060375, 20120750]

約数ペア:

[(1, 20120750), (2, 10060375), (5, 4024150), (10, 2012075), (13, 1547750), (25, 804830), (26, 773875), (41, 490750), (50, 402415), (65, 309550), (82, 245375), (125, 160966), (130, 154775), (151, 133250), (205, 98150), (250, 80483), (302, 66625), (325, 61910), (410, 49075), (533, 37750), (650, 30955), (755, 26650), (1025, 19630), (1066, 18875), (1510, 13325), (1625, 12382), (1963, 10250), (2050, 9815), (2665, 7550), (3250, 6191), (3775, 5330), (3926, 5125)]