251396860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:236

約数の個数: 144

約数和(自身を含む): 640021536

約数和(自身を除く): 388624676

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 61, 65, 110, 121, 122, 130, 131, 143, 220, 242, 244, 260, 262, 286, 305, 484, 524, 572, 605, 610, 655, 671, 715, 793, 1210, 1220, 1310, 1342, 1430, 1441, 1573, 1586, 1703, 2420, 2620, 2684, 2860, 2882, 3146, 3172, 3355, 3406, 3965, 5764, 6292, 6710, 6812, 7205, 7381, 7865, 7930, 7991, 8515, 8723, 13420, 14410, 14762, 15730, 15851, 15860, 15982, 17030, 17446, 18733, 28820, 29524, 31460, 31702, 31964, 34060, 34892, 36905, 37466, 39955, 43615, 63404, 73810, 74932, 79255, 79910, 87230, 87901, 93665, 95953, 103883, 147620, 158510, 159820, 174460, 175802, 187330, 191906, 206063, 207766, 317020, 351604, 374660, 383812, 412126, 415532, 439505, 479765, 519415, 824252, 879010, 959530, 966911, 1030315, 1038830, 1142713, 1758020, 1919060, 1933822, 2060630, 2077660, 2285426, 3867644, 4121260, 4570852, 4834555, 5713565, 9669110, 11427130, 12569843, 19338220, 22854260, 25139686, 50279372, 62849215, 125698430, 251396860]

約数ペア:

[(1, 251396860), (2, 125698430), (4, 62849215), (5, 50279372), (10, 25139686), (11, 22854260), (13, 19338220), (20, 12569843), (22, 11427130), (26, 9669110), (44, 5713565), (52, 4834555), (55, 4570852), (61, 4121260), (65, 3867644), (110, 2285426), (121, 2077660), (122, 2060630), (130, 1933822), (131, 1919060), (143, 1758020), (220, 1142713), (242, 1038830), (244, 1030315), (260, 966911), (262, 959530), (286, 879010), (305, 824252), (484, 519415), (524, 479765), (572, 439505), (605, 415532), (610, 412126), (655, 383812), (671, 374660), (715, 351604), (793, 317020), (1210, 207766), (1220, 206063), (1310, 191906), (1342, 187330), (1430, 175802), (1441, 174460), (1573, 159820), (1586, 158510), (1703, 147620), (2420, 103883), (2620, 95953), (2684, 93665), (2860, 87901), (2882, 87230), (3146, 79910), (3172, 79255), (3355, 74932), (3406, 73810), (3965, 63404), (5764, 43615), (6292, 39955), (6710, 37466), (6812, 36905), (7205, 34892), (7381, 34060), (7865, 31964), (7930, 31702), (7991, 31460), (8515, 29524), (8723, 28820), (13420, 18733), (14410, 17446), (14762, 17030), (15730, 15982), (15851, 15860)]