21037275

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:98

約数の個数: 108

約数和(自身を含む): 46677072

約数和(自身を除く): 25639797

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 25, 35, 37, 45, 57, 63, 75, 95, 105, 111, 133, 171, 175, 185, 225, 259, 285, 315, 333, 361, 399, 475, 525, 555, 665, 703, 777, 855, 925, 1083, 1197, 1295, 1425, 1575, 1665, 1805, 1995, 2109, 2331, 2527, 2775, 3249, 3325, 3515, 3885, 4275, 4921, 5415, 5985, 6327, 6475, 7581, 8325, 9025, 9975, 10545, 11655, 12635, 13357, 14763, 16245, 17575, 19425, 22743, 24605, 27075, 29925, 31635, 37905, 40071, 44289, 52725, 58275, 63175, 66785, 73815, 81225, 93499, 113715, 120213, 123025, 158175, 189525, 200355, 221445, 280497, 333925, 369075, 467495, 568575, 601065, 841491, 1001775, 1107225, 1402485, 2337475, 3005325, 4207455, 7012425, 21037275]

約数ペア:

[(1, 21037275), (3, 7012425), (5, 4207455), (7, 3005325), (9, 2337475), (15, 1402485), (19, 1107225), (21, 1001775), (25, 841491), (35, 601065), (37, 568575), (45, 467495), (57, 369075), (63, 333925), (75, 280497), (95, 221445), (105, 200355), (111, 189525), (133, 158175), (171, 123025), (175, 120213), (185, 113715), (225, 93499), (259, 81225), (285, 73815), (315, 66785), (333, 63175), (361, 58275), (399, 52725), (475, 44289), (525, 40071), (555, 37905), (665, 31635), (703, 29925), (777, 27075), (855, 24605), (925, 22743), (1083, 19425), (1197, 17575), (1295, 16245), (1425, 14763), (1575, 13357), (1665, 12635), (1805, 11655), (1995, 10545), (2109, 9975), (2331, 9025), (2527, 8325), (2775, 7581), (3249, 6475), (3325, 6327), (3515, 5985), (3885, 5415), (4275, 4921)]