278388

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:77

約数の個数: 72

約数和(自身を含む): 829920

約数和(自身を除く): 551532

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 19, 22, 33, 36, 37, 38, 44, 57, 66, 74, 76, 99, 111, 114, 132, 148, 171, 198, 209, 222, 228, 333, 342, 396, 407, 418, 444, 627, 666, 684, 703, 814, 836, 1221, 1254, 1332, 1406, 1628, 1881, 2109, 2442, 2508, 2812, 3663, 3762, 4218, 4884, 6327, 7326, 7524, 7733, 8436, 12654, 14652, 15466, 23199, 25308, 30932, 46398, 69597, 92796, 139194, 278388]

約数ペア:

[(1, 278388), (2, 139194), (3, 92796), (4, 69597), (6, 46398), (9, 30932), (11, 25308), (12, 23199), (18, 15466), (19, 14652), (22, 12654), (33, 8436), (36, 7733), (37, 7524), (38, 7326), (44, 6327), (57, 4884), (66, 4218), (74, 3762), (76, 3663), (99, 2812), (111, 2508), (114, 2442), (132, 2109), (148, 1881), (171, 1628), (198, 1406), (209, 1332), (222, 1254), (228, 1221), (333, 836), (342, 814), (396, 703), (407, 684), (418, 666), (444, 627)]