1222380020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{5483}}^1$

素因数の和:5720

約数の個数: 48

約数和(自身を含む): 2620211328

約数和(自身を除く): 1397831308

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 157, 284, 314, 355, 628, 710, 785, 1420, 1570, 3140, 5483, 10966, 11147, 21932, 22294, 27415, 44588, 54830, 55735, 109660, 111470, 222940, 389293, 778586, 860831, 1557172, 1721662, 1946465, 3443324, 3892930, 4304155, 7785860, 8608310, 17216620, 61119001, 122238002, 244476004, 305595005, 611190010, 1222380020]

約数ペア:

[(1, 1222380020), (2, 611190010), (4, 305595005), (5, 244476004), (10, 122238002), (20, 61119001), (71, 17216620), (142, 8608310), (157, 7785860), (284, 4304155), (314, 3892930), (355, 3443324), (628, 1946465), (710, 1721662), (785, 1557172), (1420, 860831), (1570, 778586), (3140, 389293), (5483, 222940), (10966, 111470), (11147, 109660), (21932, 55735), (22294, 54830), (27415, 44588)]