21605300

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:281

約数の個数: 72

約数和(自身を含む): 50621760

約数和(自身を除く): 29016460

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 71, 85, 100, 142, 170, 179, 284, 340, 355, 358, 425, 710, 716, 850, 895, 1207, 1420, 1700, 1775, 1790, 2414, 3043, 3550, 3580, 4475, 4828, 6035, 6086, 7100, 8950, 12070, 12172, 12709, 15215, 17900, 24140, 25418, 30175, 30430, 50836, 60350, 60860, 63545, 76075, 120700, 127090, 152150, 216053, 254180, 304300, 317725, 432106, 635450, 864212, 1080265, 1270900, 2160530, 4321060, 5401325, 10802650, 21605300]

約数ペア:

[(1, 21605300), (2, 10802650), (4, 5401325), (5, 4321060), (10, 2160530), (17, 1270900), (20, 1080265), (25, 864212), (34, 635450), (50, 432106), (68, 317725), (71, 304300), (85, 254180), (100, 216053), (142, 152150), (170, 127090), (179, 120700), (284, 76075), (340, 63545), (355, 60860), (358, 60350), (425, 50836), (710, 30430), (716, 30175), (850, 25418), (895, 24140), (1207, 17900), (1420, 15215), (1700, 12709), (1775, 12172), (1790, 12070), (2414, 8950), (3043, 7100), (3550, 6086), (3580, 6035), (4475, 4828)]