408049780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1\times {\mathrm{2543}}^1$

素因数の和:2736

約数の個数: 48

約数和(自身を含む): 877008384

約数和(自身を除く): 468958604

約数列:

[1, 2, 4, 5, 10, 20, 71, 113, 142, 226, 284, 355, 452, 565, 710, 1130, 1420, 2260, 2543, 5086, 8023, 10172, 12715, 16046, 25430, 32092, 40115, 50860, 80230, 160460, 180553, 287359, 361106, 574718, 722212, 902765, 1149436, 1436795, 1805530, 2873590, 3611060, 5747180, 20402489, 40804978, 81609956, 102012445, 204024890, 408049780]

約数ペア:

[(1, 408049780), (2, 204024890), (4, 102012445), (5, 81609956), (10, 40804978), (20, 20402489), (71, 5747180), (113, 3611060), (142, 2873590), (226, 1805530), (284, 1436795), (355, 1149436), (452, 902765), (565, 722212), (710, 574718), (1130, 361106), (1420, 287359), (2260, 180553), (2543, 160460), (5086, 80230), (8023, 50860), (10172, 40115), (12715, 32092), (16046, 25430)]