18245890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 38102400

約数和(自身を除く): 19856510

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 83, 89, 95, 130, 166, 178, 190, 247, 415, 445, 494, 830, 890, 1079, 1157, 1235, 1577, 1691, 2158, 2314, 2470, 3154, 3382, 5395, 5785, 7387, 7885, 8455, 10790, 11570, 14774, 15770, 16910, 20501, 21983, 36935, 41002, 43966, 73870, 96031, 102505, 109915, 140353, 192062, 205010, 219830, 280706, 480155, 701765, 960310, 1403530, 1824589, 3649178, 9122945, 18245890]

約数ペア:

[(1, 18245890), (2, 9122945), (5, 3649178), (10, 1824589), (13, 1403530), (19, 960310), (26, 701765), (38, 480155), (65, 280706), (83, 219830), (89, 205010), (95, 192062), (130, 140353), (166, 109915), (178, 102505), (190, 96031), (247, 73870), (415, 43966), (445, 41002), (494, 36935), (830, 21983), (890, 20501), (1079, 16910), (1157, 15770), (1235, 14774), (1577, 11570), (1691, 10790), (2158, 8455), (2314, 7885), (2470, 7387), (3154, 5785), (3382, 5395)]