20721300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{239}}^1$

素因数の和:290

約数の個数: 108

約数和(自身を含む): 63954240

約数和(自身を除く): 43232940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 25, 30, 34, 50, 51, 60, 68, 75, 85, 100, 102, 150, 170, 204, 239, 255, 289, 300, 340, 425, 478, 510, 578, 717, 850, 867, 956, 1020, 1156, 1195, 1275, 1434, 1445, 1700, 1734, 2390, 2550, 2868, 2890, 3468, 3585, 4063, 4335, 4780, 5100, 5780, 5975, 7170, 7225, 8126, 8670, 11950, 12189, 14340, 14450, 16252, 17340, 17925, 20315, 21675, 23900, 24378, 28900, 35850, 40630, 43350, 48756, 60945, 69071, 71700, 81260, 86700, 101575, 121890, 138142, 203150, 207213, 243780, 276284, 304725, 345355, 406300, 414426, 609450, 690710, 828852, 1036065, 1218900, 1381420, 1726775, 2072130, 3453550, 4144260, 5180325, 6907100, 10360650, 20721300]

約数ペア:

[(1, 20721300), (2, 10360650), (3, 6907100), (4, 5180325), (5, 4144260), (6, 3453550), (10, 2072130), (12, 1726775), (15, 1381420), (17, 1218900), (20, 1036065), (25, 828852), (30, 690710), (34, 609450), (50, 414426), (51, 406300), (60, 345355), (68, 304725), (75, 276284), (85, 243780), (100, 207213), (102, 203150), (150, 138142), (170, 121890), (204, 101575), (239, 86700), (255, 81260), (289, 71700), (300, 69071), (340, 60945), (425, 48756), (478, 43350), (510, 40630), (578, 35850), (717, 28900), (850, 24378), (867, 23900), (956, 21675), (1020, 20315), (1156, 17925), (1195, 17340), (1275, 16252), (1434, 14450), (1445, 14340), (1700, 12189), (1734, 11950), (2390, 8670), (2550, 8126), (2868, 7225), (2890, 7170), (3468, 5975), (3585, 5780), (4063, 5100), (4335, 4780)]