21582860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:315

約数の個数: 96

約数和(自身を含む): 54613440

約数和(自身を除く): 33030580

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 26, 34, 38, 52, 65, 68, 76, 85, 95, 130, 170, 190, 221, 247, 257, 260, 323, 340, 380, 442, 494, 514, 646, 884, 988, 1028, 1105, 1235, 1285, 1292, 1615, 2210, 2470, 2570, 3230, 3341, 4199, 4369, 4420, 4883, 4940, 5140, 6460, 6682, 8398, 8738, 9766, 13364, 16705, 16796, 17476, 19532, 20995, 21845, 24415, 33410, 41990, 43690, 48830, 56797, 63479, 66820, 83011, 83980, 87380, 97660, 113594, 126958, 166022, 227188, 253916, 283985, 317395, 332044, 415055, 567970, 634790, 830110, 1079143, 1135940, 1269580, 1660220, 2158286, 4316572, 5395715, 10791430, 21582860]

約数ペア:

[(1, 21582860), (2, 10791430), (4, 5395715), (5, 4316572), (10, 2158286), (13, 1660220), (17, 1269580), (19, 1135940), (20, 1079143), (26, 830110), (34, 634790), (38, 567970), (52, 415055), (65, 332044), (68, 317395), (76, 283985), (85, 253916), (95, 227188), (130, 166022), (170, 126958), (190, 113594), (221, 97660), (247, 87380), (257, 83980), (260, 83011), (323, 66820), (340, 63479), (380, 56797), (442, 48830), (494, 43690), (514, 41990), (646, 33410), (884, 24415), (988, 21845), (1028, 20995), (1105, 19532), (1235, 17476), (1285, 16796), (1292, 16705), (1615, 13364), (2210, 9766), (2470, 8738), (2570, 8398), (3230, 6682), (3341, 6460), (4199, 5140), (4369, 4940), (4420, 4883)]