21127365

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 43622400

約数和(自身を除く): 22495035

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 79, 105, 135, 189, 237, 283, 315, 395, 553, 711, 849, 945, 1185, 1415, 1659, 1981, 2133, 2547, 2765, 3555, 4245, 4977, 5943, 7641, 8295, 9905, 10665, 12735, 14931, 17829, 22357, 24885, 29715, 38205, 53487, 67071, 74655, 89145, 111785, 156499, 201213, 267435, 335355, 469497, 603639, 782495, 1006065, 1408491, 2347485, 3018195, 4225473, 7042455, 21127365]

約数ペア:

[(1, 21127365), (3, 7042455), (5, 4225473), (7, 3018195), (9, 2347485), (15, 1408491), (21, 1006065), (27, 782495), (35, 603639), (45, 469497), (63, 335355), (79, 267435), (105, 201213), (135, 156499), (189, 111785), (237, 89145), (283, 74655), (315, 67071), (395, 53487), (553, 38205), (711, 29715), (849, 24885), (945, 22357), (1185, 17829), (1415, 14931), (1659, 12735), (1981, 10665), (2133, 9905), (2547, 8295), (2765, 7641), (3555, 5943), (4245, 4977)]