31621980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:667

約数の個数: 96

約数和(自身を含む): 96864768

約数和(自身を除く): 65242788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 71, 78, 130, 142, 156, 195, 213, 260, 284, 355, 390, 426, 571, 710, 780, 852, 923, 1065, 1142, 1420, 1713, 1846, 2130, 2284, 2769, 2855, 3426, 3692, 4260, 4615, 5538, 5710, 6852, 7423, 8565, 9230, 11076, 11420, 13845, 14846, 17130, 18460, 22269, 27690, 29692, 34260, 37115, 40541, 44538, 55380, 74230, 81082, 89076, 111345, 121623, 148460, 162164, 202705, 222690, 243246, 405410, 445380, 486492, 527033, 608115, 810820, 1054066, 1216230, 1581099, 2108132, 2432460, 2635165, 3162198, 5270330, 6324396, 7905495, 10540660, 15810990, 31621980]

約数ペア:

[(1, 31621980), (2, 15810990), (3, 10540660), (4, 7905495), (5, 6324396), (6, 5270330), (10, 3162198), (12, 2635165), (13, 2432460), (15, 2108132), (20, 1581099), (26, 1216230), (30, 1054066), (39, 810820), (52, 608115), (60, 527033), (65, 486492), (71, 445380), (78, 405410), (130, 243246), (142, 222690), (156, 202705), (195, 162164), (213, 148460), (260, 121623), (284, 111345), (355, 89076), (390, 81082), (426, 74230), (571, 55380), (710, 44538), (780, 40541), (852, 37115), (923, 34260), (1065, 29692), (1142, 27690), (1420, 22269), (1713, 18460), (1846, 17130), (2130, 14846), (2284, 13845), (2769, 11420), (2855, 11076), (3426, 9230), (3692, 8565), (4260, 7423), (4615, 6852), (5538, 5710)]