21628404

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:155

約数の個数: 144

約数和(自身を含む): 67287360

約数和(自身を除く): 45658956

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 49, 54, 61, 63, 67, 84, 98, 108, 122, 126, 134, 147, 183, 189, 196, 201, 244, 252, 268, 294, 366, 378, 402, 427, 441, 469, 549, 588, 603, 732, 756, 804, 854, 882, 938, 1098, 1206, 1281, 1323, 1407, 1647, 1708, 1764, 1809, 1876, 2196, 2412, 2562, 2646, 2814, 2989, 3283, 3294, 3618, 3843, 4087, 4221, 5124, 5292, 5628, 5978, 6566, 6588, 7236, 7686, 8174, 8442, 8967, 9849, 11529, 11956, 12261, 12663, 13132, 15372, 16348, 16884, 17934, 19698, 23058, 24522, 25326, 26901, 28609, 29547, 35868, 36783, 39396, 46116, 49044, 50652, 53802, 57218, 59094, 73566, 80703, 85827, 88641, 107604, 110349, 114436, 118188, 147132, 161406, 171654, 177282, 200263, 220698, 257481, 322812, 343308, 354564, 400526, 441396, 514962, 600789, 772443, 801052, 1029924, 1201578, 1544886, 1802367, 2403156, 3089772, 3604734, 5407101, 7209468, 10814202, 21628404]

約数ペア:

[(1, 21628404), (2, 10814202), (3, 7209468), (4, 5407101), (6, 3604734), (7, 3089772), (9, 2403156), (12, 1802367), (14, 1544886), (18, 1201578), (21, 1029924), (27, 801052), (28, 772443), (36, 600789), (42, 514962), (49, 441396), (54, 400526), (61, 354564), (63, 343308), (67, 322812), (84, 257481), (98, 220698), (108, 200263), (122, 177282), (126, 171654), (134, 161406), (147, 147132), (183, 118188), (189, 114436), (196, 110349), (201, 107604), (244, 88641), (252, 85827), (268, 80703), (294, 73566), (366, 59094), (378, 57218), (402, 53802), (427, 50652), (441, 49044), (469, 46116), (549, 39396), (588, 36783), (603, 35868), (732, 29547), (756, 28609), (804, 26901), (854, 25326), (882, 24522), (938, 23058), (1098, 19698), (1206, 17934), (1281, 16884), (1323, 16348), (1407, 15372), (1647, 13132), (1708, 12663), (1764, 12261), (1809, 11956), (1876, 11529), (2196, 9849), (2412, 8967), (2562, 8442), (2646, 8174), (2814, 7686), (2989, 7236), (3283, 6588), (3294, 6566), (3618, 5978), (3843, 5628), (4087, 5292), (4221, 5124)]