21101544

素因数分解:

$2^3\times 3^2\times {\mathrm{37}}^1\times {\mathrm{89}}^2$

素因数の和:227

約数の個数: 72

約数和(自身を含む): 59361510

約数和(自身を除く): 38259966

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 37, 72, 74, 89, 111, 148, 178, 222, 267, 296, 333, 356, 444, 534, 666, 712, 801, 888, 1068, 1332, 1602, 2136, 2664, 3204, 3293, 6408, 6586, 7921, 9879, 13172, 15842, 19758, 23763, 26344, 29637, 31684, 39516, 47526, 59274, 63368, 71289, 79032, 95052, 118548, 142578, 190104, 237096, 285156, 293077, 570312, 586154, 879231, 1172308, 1758462, 2344616, 2637693, 3516924, 5275386, 7033848, 10550772, 21101544]

約数ペア:

[(1, 21101544), (2, 10550772), (3, 7033848), (4, 5275386), (6, 3516924), (8, 2637693), (9, 2344616), (12, 1758462), (18, 1172308), (24, 879231), (36, 586154), (37, 570312), (72, 293077), (74, 285156), (89, 237096), (111, 190104), (148, 142578), (178, 118548), (222, 95052), (267, 79032), (296, 71289), (333, 63368), (356, 59274), (444, 47526), (534, 39516), (666, 31684), (712, 29637), (801, 26344), (888, 23763), (1068, 19758), (1332, 15842), (1602, 13172), (2136, 9879), (2664, 7921), (3204, 6586), (3293, 6408)]