21192187480

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1721}}^1\times {\mathrm{3709}}^1$

素因数の和:5524

約数の個数: 64

約数和(自身を含む): 48297967200

約数和(自身を除く): 27105779720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 1721, 3320, 3442, 3709, 6884, 7418, 8605, 13768, 14836, 17210, 18545, 29672, 34420, 37090, 68840, 74180, 142843, 148360, 285686, 307847, 571372, 615694, 714215, 1142744, 1231388, 1428430, 1539235, 2462776, 2856860, 3078470, 5713720, 6156940, 6383189, 12313880, 12766378, 25532756, 31915945, 51065512, 63831890, 127663780, 255327560, 529804687, 1059609374, 2119218748, 2649023435, 4238437496, 5298046870, 10596093740, 21192187480]

約数ペア:

[(1, 21192187480), (2, 10596093740), (4, 5298046870), (5, 4238437496), (8, 2649023435), (10, 2119218748), (20, 1059609374), (40, 529804687), (83, 255327560), (166, 127663780), (332, 63831890), (415, 51065512), (664, 31915945), (830, 25532756), (1660, 12766378), (1721, 12313880), (3320, 6383189), (3442, 6156940), (3709, 5713720), (6884, 3078470), (7418, 2856860), (8605, 2462776), (13768, 1539235), (14836, 1428430), (17210, 1231388), (18545, 1142744), (29672, 714215), (34420, 615694), (37090, 571372), (68840, 307847), (74180, 285686), (142843, 148360)]