17810780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1123}}^1$

素因数の和:1206

約数の個数: 48

約数和(自身を含む): 40976544

約数和(自身を除く): 23165764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1123, 1220, 1586, 2246, 3172, 3965, 4492, 5615, 7930, 11230, 14599, 15860, 22460, 29198, 58396, 68503, 72995, 137006, 145990, 274012, 291980, 342515, 685030, 890539, 1370060, 1781078, 3562156, 4452695, 8905390, 17810780]

約数ペア:

[(1, 17810780), (2, 8905390), (4, 4452695), (5, 3562156), (10, 1781078), (13, 1370060), (20, 890539), (26, 685030), (52, 342515), (61, 291980), (65, 274012), (122, 145990), (130, 137006), (244, 72995), (260, 68503), (305, 58396), (610, 29198), (793, 22460), (1123, 15860), (1220, 14599), (1586, 11230), (2246, 7930), (3172, 5615), (3965, 4492)]