21080178944

素因数分解:

$2^8\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{122719}}^1$

素因数の和:122807

約数の個数: 72

約数和(自身を含む): 46656180480

約数和(自身を除く): 25576001536

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 61, 64, 88, 122, 128, 176, 244, 256, 352, 488, 671, 704, 976, 1342, 1408, 1952, 2684, 2816, 3904, 5368, 7808, 10736, 15616, 21472, 42944, 85888, 122719, 171776, 245438, 490876, 981752, 1349909, 1963504, 2699818, 3927008, 5399636, 7485859, 7854016, 10799272, 14971718, 15708032, 21598544, 29943436, 31416064, 43197088, 59886872, 82344449, 86394176, 119773744, 164688898, 172788352, 239547488, 329377796, 345576704, 479094976, 658755592, 958189952, 1317511184, 1916379904, 2635022368, 5270044736, 10540089472, 21080178944]

約数ペア:

[(1, 21080178944), (2, 10540089472), (4, 5270044736), (8, 2635022368), (11, 1916379904), (16, 1317511184), (22, 958189952), (32, 658755592), (44, 479094976), (61, 345576704), (64, 329377796), (88, 239547488), (122, 172788352), (128, 164688898), (176, 119773744), (244, 86394176), (256, 82344449), (352, 59886872), (488, 43197088), (671, 31416064), (704, 29943436), (976, 21598544), (1342, 15708032), (1408, 14971718), (1952, 10799272), (2684, 7854016), (2816, 7485859), (3904, 5399636), (5368, 3927008), (7808, 2699818), (10736, 1963504), (15616, 1349909), (21472, 981752), (42944, 490876), (85888, 245438), (122719, 171776)]