21121290

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{571}}^1$

素因数の和:724

約数の個数: 64

約数和(自身を含む): 56833920

約数和(自身を除く): 35712630

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 137, 270, 274, 411, 571, 685, 822, 1142, 1233, 1370, 1713, 2055, 2466, 2855, 3426, 3699, 4110, 5139, 5710, 6165, 7398, 8565, 10278, 12330, 15417, 17130, 18495, 25695, 30834, 36990, 51390, 77085, 78227, 154170, 156454, 234681, 391135, 469362, 704043, 782270, 1173405, 1408086, 2112129, 2346810, 3520215, 4224258, 7040430, 10560645, 21121290]

約数ペア:

[(1, 21121290), (2, 10560645), (3, 7040430), (5, 4224258), (6, 3520215), (9, 2346810), (10, 2112129), (15, 1408086), (18, 1173405), (27, 782270), (30, 704043), (45, 469362), (54, 391135), (90, 234681), (135, 156454), (137, 154170), (270, 78227), (274, 77085), (411, 51390), (571, 36990), (685, 30834), (822, 25695), (1142, 18495), (1233, 17130), (1370, 15417), (1713, 12330), (2055, 10278), (2466, 8565), (2855, 7398), (3426, 6165), (3699, 5710), (4110, 5139)]