21489972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:281

約数の個数: 96

約数和(自身を含む): 61689600

約数和(自身を除く): 40199628

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 68, 84, 101, 102, 119, 149, 202, 204, 238, 298, 303, 357, 404, 447, 476, 596, 606, 707, 714, 894, 1043, 1212, 1414, 1428, 1717, 1788, 2086, 2121, 2533, 2828, 3129, 3434, 4172, 4242, 5066, 5151, 6258, 6868, 7599, 8484, 10132, 10302, 12019, 12516, 15049, 15198, 17731, 20604, 24038, 30098, 30396, 35462, 36057, 45147, 48076, 53193, 60196, 70924, 72114, 90294, 105343, 106386, 144228, 180588, 210686, 212772, 255833, 316029, 421372, 511666, 632058, 767499, 1023332, 1264116, 1534998, 1790831, 3069996, 3581662, 5372493, 7163324, 10744986, 21489972]

約数ペア:

[(1, 21489972), (2, 10744986), (3, 7163324), (4, 5372493), (6, 3581662), (7, 3069996), (12, 1790831), (14, 1534998), (17, 1264116), (21, 1023332), (28, 767499), (34, 632058), (42, 511666), (51, 421372), (68, 316029), (84, 255833), (101, 212772), (102, 210686), (119, 180588), (149, 144228), (202, 106386), (204, 105343), (238, 90294), (298, 72114), (303, 70924), (357, 60196), (404, 53193), (447, 48076), (476, 45147), (596, 36057), (606, 35462), (707, 30396), (714, 30098), (894, 24038), (1043, 20604), (1212, 17731), (1414, 15198), (1428, 15049), (1717, 12516), (1788, 12019), (2086, 10302), (2121, 10132), (2533, 8484), (2828, 7599), (3129, 6868), (3434, 6258), (4172, 5151), (4242, 5066)]