21321420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{317}}^1$

素因数の和:407

約数の個数: 96

約数和(自身を含む): 64108800

約数和(自身を除く): 42787380

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 59, 60, 76, 95, 114, 118, 177, 190, 228, 236, 285, 295, 317, 354, 380, 570, 590, 634, 708, 885, 951, 1121, 1140, 1180, 1268, 1585, 1770, 1902, 2242, 3170, 3363, 3540, 3804, 4484, 4755, 5605, 6023, 6340, 6726, 9510, 11210, 12046, 13452, 16815, 18069, 18703, 19020, 22420, 24092, 30115, 33630, 36138, 37406, 56109, 60230, 67260, 72276, 74812, 90345, 93515, 112218, 120460, 180690, 187030, 224436, 280545, 355357, 361380, 374060, 561090, 710714, 1066071, 1122180, 1421428, 1776785, 2132142, 3553570, 4264284, 5330355, 7107140, 10660710, 21321420]

約数ペア:

[(1, 21321420), (2, 10660710), (3, 7107140), (4, 5330355), (5, 4264284), (6, 3553570), (10, 2132142), (12, 1776785), (15, 1421428), (19, 1122180), (20, 1066071), (30, 710714), (38, 561090), (57, 374060), (59, 361380), (60, 355357), (76, 280545), (95, 224436), (114, 187030), (118, 180690), (177, 120460), (190, 112218), (228, 93515), (236, 90345), (285, 74812), (295, 72276), (317, 67260), (354, 60230), (380, 56109), (570, 37406), (590, 36138), (634, 33630), (708, 30115), (885, 24092), (951, 22420), (1121, 19020), (1140, 18703), (1180, 18069), (1268, 16815), (1585, 13452), (1770, 12046), (1902, 11210), (2242, 9510), (3170, 6726), (3363, 6340), (3540, 6023), (3804, 5605), (4484, 4755)]