20990430

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{59}}^2\times {\mathrm{67}}^1$

素因数の和:198

約数の個数: 72

約数和(自身を含む): 56344392

約数和(自身を除く): 35353962

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 59, 67, 90, 118, 134, 177, 201, 295, 335, 354, 402, 531, 590, 603, 670, 885, 1005, 1062, 1206, 1770, 2010, 2655, 3015, 3481, 3953, 5310, 6030, 6962, 7906, 10443, 11859, 17405, 19765, 20886, 23718, 31329, 34810, 35577, 39530, 52215, 59295, 62658, 71154, 104430, 118590, 156645, 177885, 233227, 313290, 355770, 466454, 699681, 1166135, 1399362, 2099043, 2332270, 3498405, 4198086, 6996810, 10495215, 20990430]

約数ペア:

[(1, 20990430), (2, 10495215), (3, 6996810), (5, 4198086), (6, 3498405), (9, 2332270), (10, 2099043), (15, 1399362), (18, 1166135), (30, 699681), (45, 466454), (59, 355770), (67, 313290), (90, 233227), (118, 177885), (134, 156645), (177, 118590), (201, 104430), (295, 71154), (335, 62658), (354, 59295), (402, 52215), (531, 39530), (590, 35577), (603, 34810), (670, 31329), (885, 23718), (1005, 20886), (1062, 19765), (1206, 17405), (1770, 11859), (2010, 10443), (2655, 7906), (3015, 6962), (3481, 6030), (3953, 5310)]