20474220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26249}}^1$

素因数の和:26274

約数の個数: 48

約数和(自身を含む): 61740000

約数和(自身を除く): 41265780

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26249, 52498, 78747, 104996, 131245, 157494, 262490, 314988, 341237, 393735, 524980, 682474, 787470, 1023711, 1364948, 1574940, 1706185, 2047422, 3412370, 4094844, 5118555, 6824740, 10237110, 20474220]

約数ペア:

[(1, 20474220), (2, 10237110), (3, 6824740), (4, 5118555), (5, 4094844), (6, 3412370), (10, 2047422), (12, 1706185), (13, 1574940), (15, 1364948), (20, 1023711), (26, 787470), (30, 682474), (39, 524980), (52, 393735), (60, 341237), (65, 314988), (78, 262490), (130, 157494), (156, 131245), (195, 104996), (260, 78747), (390, 52498), (780, 26249)]