311891940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{3947}}^1$

素因数の和:4401

約数の個数: 72

約数和(自身を含む): 948467520

約数和(自身を除く): 636575580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 878, 1317, 1756, 2195, 2634, 3947, 3951, 4390, 5268, 6585, 7894, 7902, 8780, 11841, 13170, 15788, 15804, 19735, 19755, 23682, 26340, 35523, 39470, 39510, 47364, 59205, 71046, 78940, 79020, 118410, 142092, 177615, 236820, 355230, 710460, 1732733, 3465466, 5198199, 6930932, 8663665, 10396398, 15594597, 17327330, 20792796, 25990995, 31189194, 34654660, 51981990, 62378388, 77972985, 103963980, 155945970, 311891940]

約数ペア:

[(1, 311891940), (2, 155945970), (3, 103963980), (4, 77972985), (5, 62378388), (6, 51981990), (9, 34654660), (10, 31189194), (12, 25990995), (15, 20792796), (18, 17327330), (20, 15594597), (30, 10396398), (36, 8663665), (45, 6930932), (60, 5198199), (90, 3465466), (180, 1732733), (439, 710460), (878, 355230), (1317, 236820), (1756, 177615), (2195, 142092), (2634, 118410), (3947, 79020), (3951, 78940), (4390, 71046), (5268, 59205), (6585, 47364), (7894, 39510), (7902, 39470), (8780, 35523), (11841, 26340), (13170, 23682), (15788, 19755), (15804, 19735)]