81929840

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{311}}^1$

素因数の和:450

約数の個数: 80

約数和(自身を含む): 198469440

約数和(自身を除く): 116539600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 89, 148, 178, 185, 296, 311, 356, 370, 445, 592, 622, 712, 740, 890, 1244, 1424, 1480, 1555, 1780, 2488, 2960, 3110, 3293, 3560, 4976, 6220, 6586, 7120, 11507, 12440, 13172, 16465, 23014, 24880, 26344, 27679, 32930, 46028, 52688, 55358, 57535, 65860, 92056, 110716, 115070, 131720, 138395, 184112, 221432, 230140, 263440, 276790, 442864, 460280, 553580, 920560, 1024123, 1107160, 2048246, 2214320, 4096492, 5120615, 8192984, 10241230, 16385968, 20482460, 40964920, 81929840]

約数ペア:

[(1, 81929840), (2, 40964920), (4, 20482460), (5, 16385968), (8, 10241230), (10, 8192984), (16, 5120615), (20, 4096492), (37, 2214320), (40, 2048246), (74, 1107160), (80, 1024123), (89, 920560), (148, 553580), (178, 460280), (185, 442864), (296, 276790), (311, 263440), (356, 230140), (370, 221432), (445, 184112), (592, 138395), (622, 131720), (712, 115070), (740, 110716), (890, 92056), (1244, 65860), (1424, 57535), (1480, 55358), (1555, 52688), (1780, 46028), (2488, 32930), (2960, 27679), (3110, 26344), (3293, 24880), (3560, 23014), (4976, 16465), (6220, 13172), (6586, 12440), (7120, 11507)]