20870430

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:218

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 41337570

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 23, 29, 30, 35, 42, 46, 58, 69, 70, 87, 105, 115, 138, 145, 149, 161, 174, 203, 210, 230, 290, 298, 322, 345, 406, 435, 447, 483, 609, 667, 690, 745, 805, 870, 894, 966, 1015, 1043, 1218, 1334, 1490, 1610, 2001, 2030, 2086, 2235, 2415, 3045, 3129, 3335, 3427, 4002, 4321, 4470, 4669, 4830, 5215, 6090, 6258, 6670, 6854, 8642, 9338, 10005, 10281, 10430, 12963, 14007, 15645, 17135, 20010, 20562, 21605, 23345, 23989, 25926, 28014, 30247, 31290, 34270, 43210, 46690, 47978, 51405, 60494, 64815, 70035, 71967, 90741, 99383, 102810, 119945, 129630, 140070, 143934, 151235, 181482, 198766, 239890, 298149, 302470, 359835, 453705, 496915, 596298, 695681, 719670, 907410, 993830, 1391362, 1490745, 2087043, 2981490, 3478405, 4174086, 6956810, 10435215, 20870430]

約数ペア:

[(1, 20870430), (2, 10435215), (3, 6956810), (5, 4174086), (6, 3478405), (7, 2981490), (10, 2087043), (14, 1490745), (15, 1391362), (21, 993830), (23, 907410), (29, 719670), (30, 695681), (35, 596298), (42, 496915), (46, 453705), (58, 359835), (69, 302470), (70, 298149), (87, 239890), (105, 198766), (115, 181482), (138, 151235), (145, 143934), (149, 140070), (161, 129630), (174, 119945), (203, 102810), (210, 99383), (230, 90741), (290, 71967), (298, 70035), (322, 64815), (345, 60494), (406, 51405), (435, 47978), (447, 46690), (483, 43210), (609, 34270), (667, 31290), (690, 30247), (745, 28014), (805, 25926), (870, 23989), (894, 23345), (966, 21605), (1015, 20562), (1043, 20010), (1218, 17135), (1334, 15645), (1490, 14007), (1610, 12963), (2001, 10430), (2030, 10281), (2086, 10005), (2235, 9338), (2415, 8642), (3045, 6854), (3129, 6670), (3335, 6258), (3427, 6090), (4002, 5215), (4321, 4830), (4470, 4669)]