20515599828

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{638161}}^1$

素因数の和:638237

約数の個数: 72

約数和(自身を含む): 55749832320

約数和(自身を除く): 35234232492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 47, 57, 76, 94, 114, 141, 171, 188, 228, 282, 342, 423, 564, 684, 846, 893, 1692, 1786, 2679, 3572, 5358, 8037, 10716, 16074, 32148, 638161, 1276322, 1914483, 2552644, 3828966, 5743449, 7657932, 11486898, 12125059, 22973796, 24250118, 29993567, 36375177, 48500236, 59987134, 72750354, 89980701, 109125531, 119974268, 145500708, 179961402, 218251062, 269942103, 359922804, 436502124, 539884206, 569877773, 1079768412, 1139755546, 1709633319, 2279511092, 3419266638, 5128899957, 6838533276, 10257799914, 20515599828]

約数ペア:

[(1, 20515599828), (2, 10257799914), (3, 6838533276), (4, 5128899957), (6, 3419266638), (9, 2279511092), (12, 1709633319), (18, 1139755546), (19, 1079768412), (36, 569877773), (38, 539884206), (47, 436502124), (57, 359922804), (76, 269942103), (94, 218251062), (114, 179961402), (141, 145500708), (171, 119974268), (188, 109125531), (228, 89980701), (282, 72750354), (342, 59987134), (423, 48500236), (564, 36375177), (684, 29993567), (846, 24250118), (893, 22973796), (1692, 12125059), (1786, 11486898), (2679, 7657932), (3572, 5743449), (5358, 3828966), (8037, 2552644), (10716, 1914483), (16074, 1276322), (32148, 638161)]