81167820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{331}}^1$

素因数の和:471

約数の個数: 96

約数和(自身を含む): 235151616

約数和(自身を除く): 153983796

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 67, 122, 134, 183, 201, 244, 268, 305, 331, 335, 366, 402, 610, 662, 670, 732, 804, 915, 993, 1005, 1220, 1324, 1340, 1655, 1830, 1986, 2010, 3310, 3660, 3972, 4020, 4087, 4965, 6620, 8174, 9930, 12261, 16348, 19860, 20191, 20435, 22177, 24522, 40382, 40870, 44354, 49044, 60573, 61305, 66531, 80764, 81740, 88708, 100955, 110885, 121146, 122610, 133062, 201910, 221770, 242292, 245220, 266124, 302865, 332655, 403820, 443540, 605730, 665310, 1211460, 1330620, 1352797, 2705594, 4058391, 5411188, 6763985, 8116782, 13527970, 16233564, 20291955, 27055940, 40583910, 81167820]

約数ペア:

[(1, 81167820), (2, 40583910), (3, 27055940), (4, 20291955), (5, 16233564), (6, 13527970), (10, 8116782), (12, 6763985), (15, 5411188), (20, 4058391), (30, 2705594), (60, 1352797), (61, 1330620), (67, 1211460), (122, 665310), (134, 605730), (183, 443540), (201, 403820), (244, 332655), (268, 302865), (305, 266124), (331, 245220), (335, 242292), (366, 221770), (402, 201910), (610, 133062), (662, 122610), (670, 121146), (732, 110885), (804, 100955), (915, 88708), (993, 81740), (1005, 80764), (1220, 66531), (1324, 61305), (1340, 60573), (1655, 49044), (1830, 44354), (1986, 40870), (2010, 40382), (3310, 24522), (3660, 22177), (3972, 20435), (4020, 20191), (4087, 19860), (4965, 16348), (6620, 12261), (8174, 9930)]