81228690

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:273

約数の個数: 128

約数和(自身を含む): 228510720

約数和(自身を除く): 147282030

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 37, 45, 47, 54, 74, 90, 94, 111, 135, 141, 173, 185, 222, 235, 270, 282, 333, 346, 370, 423, 470, 519, 555, 666, 705, 846, 865, 999, 1038, 1110, 1269, 1410, 1557, 1665, 1730, 1739, 1998, 2115, 2538, 2595, 3114, 3330, 3478, 4230, 4671, 4995, 5190, 5217, 6345, 6401, 7785, 8131, 8695, 9342, 9990, 10434, 12690, 12802, 15570, 15651, 16262, 17390, 19203, 23355, 24393, 26085, 31302, 32005, 38406, 40655, 46710, 46953, 48786, 52170, 57609, 64010, 73179, 78255, 81310, 93906, 96015, 115218, 121965, 146358, 156510, 172827, 192030, 219537, 234765, 243930, 288045, 300847, 345654, 365895, 439074, 469530, 576090, 601694, 731790, 864135, 902541, 1097685, 1504235, 1728270, 1805082, 2195370, 2707623, 3008470, 4512705, 5415246, 8122869, 9025410, 13538115, 16245738, 27076230, 40614345, 81228690]

約数ペア:

[(1, 81228690), (2, 40614345), (3, 27076230), (5, 16245738), (6, 13538115), (9, 9025410), (10, 8122869), (15, 5415246), (18, 4512705), (27, 3008470), (30, 2707623), (37, 2195370), (45, 1805082), (47, 1728270), (54, 1504235), (74, 1097685), (90, 902541), (94, 864135), (111, 731790), (135, 601694), (141, 576090), (173, 469530), (185, 439074), (222, 365895), (235, 345654), (270, 300847), (282, 288045), (333, 243930), (346, 234765), (370, 219537), (423, 192030), (470, 172827), (519, 156510), (555, 146358), (666, 121965), (705, 115218), (846, 96015), (865, 93906), (999, 81310), (1038, 78255), (1110, 73179), (1269, 64010), (1410, 57609), (1557, 52170), (1665, 48786), (1730, 46953), (1739, 46710), (1998, 40655), (2115, 38406), (2538, 32005), (2595, 31302), (3114, 26085), (3330, 24393), (3478, 23355), (4230, 19203), (4671, 17390), (4995, 16262), (5190, 15651), (5217, 15570), (6345, 12802), (6401, 12690), (7785, 10434), (8131, 9990), (8695, 9342)]