20720910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1249}}^1$

素因数の和:1345

約数の個数: 64

約数和(自身を含む): 57600000

約数和(自身を除く): 36879090

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 79, 105, 158, 210, 237, 395, 474, 553, 790, 1106, 1185, 1249, 1659, 2370, 2498, 2765, 3318, 3747, 5530, 6245, 7494, 8295, 8743, 12490, 16590, 17486, 18735, 26229, 37470, 43715, 52458, 87430, 98671, 131145, 197342, 262290, 296013, 493355, 592026, 690697, 986710, 1381394, 1480065, 2072091, 2960130, 3453485, 4144182, 6906970, 10360455, 20720910]

約数ペア:

[(1, 20720910), (2, 10360455), (3, 6906970), (5, 4144182), (6, 3453485), (7, 2960130), (10, 2072091), (14, 1480065), (15, 1381394), (21, 986710), (30, 690697), (35, 592026), (42, 493355), (70, 296013), (79, 262290), (105, 197342), (158, 131145), (210, 98671), (237, 87430), (395, 52458), (474, 43715), (553, 37470), (790, 26229), (1106, 18735), (1185, 17486), (1249, 16590), (1659, 12490), (2370, 8743), (2498, 8295), (2765, 7494), (3318, 6245), (3747, 5530)]