20870388

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7529}}^1$

素因数の和:7557

約数の個数: 72

約数和(自身を含む): 65782080

約数和(自身を除く): 44911692

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7529, 15058, 22587, 30116, 45174, 52703, 67761, 82819, 90348, 105406, 135522, 158109, 165638, 210812, 248457, 271044, 316218, 331276, 474327, 496914, 579733, 632436, 745371, 948654, 993828, 1159466, 1490742, 1739199, 1897308, 2318932, 2981484, 3478398, 5217597, 6956796, 10435194, 20870388]

約数ペア:

[(1, 20870388), (2, 10435194), (3, 6956796), (4, 5217597), (6, 3478398), (7, 2981484), (9, 2318932), (11, 1897308), (12, 1739199), (14, 1490742), (18, 1159466), (21, 993828), (22, 948654), (28, 745371), (33, 632436), (36, 579733), (42, 496914), (44, 474327), (63, 331276), (66, 316218), (77, 271044), (84, 248457), (99, 210812), (126, 165638), (132, 158109), (154, 135522), (198, 105406), (231, 90348), (252, 82819), (308, 67761), (396, 52703), (462, 45174), (693, 30116), (924, 22587), (1386, 15058), (2772, 7529)]