18212220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:252

約数の個数: 144

約数和(自身を含む): 61213152

約数和(自身を除く): 43000932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 43, 45, 52, 60, 65, 78, 86, 90, 117, 129, 130, 156, 172, 180, 181, 195, 215, 234, 258, 260, 362, 387, 390, 430, 468, 516, 543, 559, 585, 645, 724, 774, 780, 860, 905, 1086, 1118, 1170, 1290, 1548, 1629, 1677, 1810, 1935, 2172, 2236, 2340, 2353, 2580, 2715, 2795, 3258, 3354, 3620, 3870, 4706, 5031, 5430, 5590, 6516, 6708, 7059, 7740, 7783, 8145, 8385, 9412, 10062, 10860, 11180, 11765, 14118, 15566, 16290, 16770, 20124, 21177, 23349, 23530, 25155, 28236, 31132, 32580, 33540, 35295, 38915, 42354, 46698, 47060, 50310, 70047, 70590, 77830, 84708, 93396, 100620, 101179, 105885, 116745, 140094, 141180, 155660, 202358, 211770, 233490, 280188, 303537, 350235, 404716, 423540, 466980, 505895, 607074, 700470, 910611, 1011790, 1214148, 1400940, 1517685, 1821222, 2023580, 3035370, 3642444, 4553055, 6070740, 9106110, 18212220]

約数ペア:

[(1, 18212220), (2, 9106110), (3, 6070740), (4, 4553055), (5, 3642444), (6, 3035370), (9, 2023580), (10, 1821222), (12, 1517685), (13, 1400940), (15, 1214148), (18, 1011790), (20, 910611), (26, 700470), (30, 607074), (36, 505895), (39, 466980), (43, 423540), (45, 404716), (52, 350235), (60, 303537), (65, 280188), (78, 233490), (86, 211770), (90, 202358), (117, 155660), (129, 141180), (130, 140094), (156, 116745), (172, 105885), (180, 101179), (181, 100620), (195, 93396), (215, 84708), (234, 77830), (258, 70590), (260, 70047), (362, 50310), (387, 47060), (390, 46698), (430, 42354), (468, 38915), (516, 35295), (543, 33540), (559, 32580), (585, 31132), (645, 28236), (724, 25155), (774, 23530), (780, 23349), (860, 21177), (905, 20124), (1086, 16770), (1118, 16290), (1170, 15566), (1290, 14118), (1548, 11765), (1629, 11180), (1677, 10860), (1810, 10062), (1935, 9412), (2172, 8385), (2236, 8145), (2340, 7783), (2353, 7740), (2580, 7059), (2715, 6708), (2795, 6516), (3258, 5590), (3354, 5430), (3620, 5031), (3870, 4706)]